Coast Guard Exams
Question 752Rules of the Road90% to pass

BOTH INTERNATIONAL & INLAND At night you sight a vessel displaying a single green light. Which vessel have you sighted?

AI Explanation
The correct answer is C) a sailing vessel underway. According to the Navigation Rules, both International and Inland, a sailing vessel underway displays a single green light at night. This is to indicate the vessel's port (left) side. The other options are incorrect because: A) A drifting vessel would not display any navigation lights. B) A small motorboat underway would display a combination of red and green sidelights, not just a single green light. D) A vessel at anchor would display an all-round white anchor light, not a single green light.

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